Samsung RF267AARS Service Manual page 67

TROUBLESHOOTING
6) If F DEF Sensor has trouble
ERROR Code
2¢ (-19¡ ) is recommended
DATA1.
Temperature table
** Measuring point of resistance value according to
Sensor **
F-DEF : CN30#4 CN75#1 measuring resistance
value
** 0 : Short trouble / : Open trouble
Refer to circuit diagram in the manual
Sensor MICOM/Connector number
F DEF Connector CN30#4(Orange) to
CN1#3(Black) PCB typical Ground
Voltage measured between 4.6V ~ 0.6V.
Measuring voltage of IC01 MICOM #53,
CN30#4(Orange) and CN1#3(Black) from
PCB typical Ground part are similar.
Checking method of F DEF Sensor resistance
CN30#4(Orange) CN75#1(Gray)
- Compare the temperature table after the measure.
38¢ (3¡ ) is recommended
MAIN PCB Connector CN30#4(Orange)
IC01 MICOM #53 normal?
No trouble with PCB and temperature sensor.
Recheck the bad contact of the connection.
Checking method of F DEF Sensor voltage
- Measure the voltage of Sensor Check Point #1(IC01 MICOM
#52) on PCB or CN30#4(Orange)
- Compare the temperature table after the measure
Measuring voltage of CN30#4(Orange)
65
Start Start
Are MAIN PCB NO
Connector CN30 to
CN75 insert correctly?
YES YES
NO
Is F DEF Sensor
unit normal?
YES YES
Is the voltage between NO(0.6V > Measurement < 4.6V)
to CN1#3(Black) normal?
YES
YES
NO
Is the input voltage of
YES
CN1#3(Black)
CN1#3(Black) are below
Bad contact of connector/ insert correctly
Replace temperature sensor
Recheck the wiring connection
Check the iced-solder, solder
bridging, disturbed solder
typical PCB Ground
CN1#3(Black)